单项选择题

Spiders "hold their planetary seat with assurance" because they are ______.

A．more numerous than any other species
B．able to adapt to hostile environments
C．masters of the earth's surface
D．all of the above
<上一题 目录 下一题>
热门 试题

单项选择题
From the selection, we may conclude that ______.
A．spiders have adapted to many unlikely environments
B．on the whole spiders are delicate creatures
C．a species of black spiders can live anywhere
D．spiders are the greatest marvel of natural science
单项选择题
The selection says that spiders have been discovered ______.
A．five miles above earth
B．more than 2000 feet underground
C．everywhere that man has reached
D．both A and B
相关试题